Effect of using external gfrp plates on structurally deficient rc beams

Hau Y. Leung; Ramapillai V. Balendran

doi:10.1080/13923730.2003.10531299

Effect of using external gfrp plates on structurally deficient rc beams

Hau Y. Leung
, Ramapillai V. Balendran

City University of Hong Kong

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

1 Citation (Scopus)

2 Downloads (CityUHK Scholars)

Abstract

This paper presents some experimental results on the behaviour of flexure- and shear-deficient RC beams strengthened with external glass fibre reinforced polymer (GFRP) plates. Ten number of 2,5 m long over-designed, unplated under-design and plated under-designed beams were examined under four-point bending condition. Experimental results indicated that use of GFRP plates enhanced the strength and deformation capacity of the structurally deficient beams by altering their failure modes. Application of side plates on shear-deficient RC beams appeared to be more effective than using bottom plates on flexure-deficient RC beams. However, without any improvement on concrete compressive capacity, additional shear capacities provided to the beams under the action of side plates increased the likelihood of beam failure by concrete crushing. Simultaneous use of bottom and side plates on flexure- and shear-deficient RC beams could result in reduced deflection. The change in the neutral axis depth and GFRP strain was also addressed. © 2003 Taylor and Francis Group, LLC.

Original language	English
Pages (from-to)	36-44
Journal	Journal of Civil Engineering and Management
Volume	9
Issue number	1
DOIs	https://doi.org/10.1080/13923730.2003.10531299
Publication status	Published - 2003

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

The work described in this paper was fully supported by a grant from the City University of Hong Kong (Project No 9030935).

Research Keywords

Concrete
External plates
Flexure
GFRP
RC beams
Shear
Strengthening

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This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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title = "Effect of using external gfrp plates on structurally deficient rc beams",

abstract = "This paper presents some experimental results on the behaviour of flexure- and shear-deficient RC beams strengthened with external glass fibre reinforced polymer (GFRP) plates. Ten number of 2,5 m long over-designed, unplated under-design and plated under-designed beams were examined under four-point bending condition. Experimental results indicated that use of GFRP plates enhanced the strength and deformation capacity of the structurally deficient beams by altering their failure modes. Application of side plates on shear-deficient RC beams appeared to be more effective than using bottom plates on flexure-deficient RC beams. However, without any improvement on concrete compressive capacity, additional shear capacities provided to the beams under the action of side plates increased the likelihood of beam failure by concrete crushing. Simultaneous use of bottom and side plates on flexure- and shear-deficient RC beams could result in reduced deflection. The change in the neutral axis depth and GFRP strain was also addressed. {\textcopyright} 2003 Taylor and Francis Group, LLC.",

keywords = "Concrete, External plates, Flexure, GFRP, RC beams, Shear, Strengthening",

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T1 - Effect of using external gfrp plates on structurally deficient rc beams

AU - Leung, Hau Y.

AU - Balendran, Ramapillai V.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2003

Y1 - 2003

N2 - This paper presents some experimental results on the behaviour of flexure- and shear-deficient RC beams strengthened with external glass fibre reinforced polymer (GFRP) plates. Ten number of 2,5 m long over-designed, unplated under-design and plated under-designed beams were examined under four-point bending condition. Experimental results indicated that use of GFRP plates enhanced the strength and deformation capacity of the structurally deficient beams by altering their failure modes. Application of side plates on shear-deficient RC beams appeared to be more effective than using bottom plates on flexure-deficient RC beams. However, without any improvement on concrete compressive capacity, additional shear capacities provided to the beams under the action of side plates increased the likelihood of beam failure by concrete crushing. Simultaneous use of bottom and side plates on flexure- and shear-deficient RC beams could result in reduced deflection. The change in the neutral axis depth and GFRP strain was also addressed. © 2003 Taylor and Francis Group, LLC.

AB - This paper presents some experimental results on the behaviour of flexure- and shear-deficient RC beams strengthened with external glass fibre reinforced polymer (GFRP) plates. Ten number of 2,5 m long over-designed, unplated under-design and plated under-designed beams were examined under four-point bending condition. Experimental results indicated that use of GFRP plates enhanced the strength and deformation capacity of the structurally deficient beams by altering their failure modes. Application of side plates on shear-deficient RC beams appeared to be more effective than using bottom plates on flexure-deficient RC beams. However, without any improvement on concrete compressive capacity, additional shear capacities provided to the beams under the action of side plates increased the likelihood of beam failure by concrete crushing. Simultaneous use of bottom and side plates on flexure- and shear-deficient RC beams could result in reduced deflection. The change in the neutral axis depth and GFRP strain was also addressed. © 2003 Taylor and Francis Group, LLC.

KW - Concrete

KW - External plates

KW - Flexure

KW - GFRP

KW - RC beams

KW - Shear

KW - Strengthening

UR - https://www.scopus.com/pages/publications/84908866266

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84908866266&origin=recordpage

U2 - 10.1080/13923730.2003.10531299

DO - 10.1080/13923730.2003.10531299

M3 - RGC 21 - Publication in refereed journal

SN - 1392-3730

VL - 9

SP - 36

EP - 44

JO - Journal of Civil Engineering and Management

JF - Journal of Civil Engineering and Management

IS - 1

ER -

Effect of using external gfrp plates on structurally deficient rc beams

Abstract

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Research Keywords

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